Update CI

Author: ota-meshi

.github/workflows/GHPages.yml

@@ -0,0 +1,22 @@
+name: GHPages
+
+on:
+  push:
+    branches: [master]
+
+jobs:
+  deploy-docs:
+    runs-on: macos-latest
+    steps:
+    - uses: actions/checkout@v2
+    - uses: actions/setup-node@v1
+    - name: Install Packages
+      run: npm install
+    - name: Build docs
+      run: npm run docs:build
+    - name: Deploy
+      uses: peaceiris/actions-gh-pages@v3
+      with:
+        github_token: ${{ secrets.GITHUB_TOKEN }}
+        publish_dir: ./docs/.vuepress/dist
+        force_orphan: true

package.json

@@ -30,9 +30,6 @@
     "predocs:watch": "npm run build:ts",
     "docs:watch": "vuepress dev --debug docs",
     "docs:build": "npm run build:ts && vuepress build docs --no-cache",
-    "docs-deploysetup": "npm run docs:build && npm run docs-deploysetup:clean && npm run docs-deploysetup:copy",
-    "docs-deploysetup:clean": "rimraf assets",
-    "docs-deploysetup:copy": "npx cpx \"docs/\\.vuepress/dist/**\" . -u",
     "preversion": "npm test && npm run update && git add .",
     "version": "npm run eslint-fix && git add ."
   },